/*
 * Copyright (c) 2010 Hajime Tazaki
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Authors: Hajime Tazaki <tazaki@sfc.wide.ad.jp>
 */

#include "ipv4-packet-info-tag.h"

#include "ns3/ipv4-address.h"
#include "ns3/log.h"

#include <stdint.h>

namespace ns3
{

NS_LOG_COMPONENT_DEFINE("Ipv4PacketInfoTag");

NS_OBJECT_ENSURE_REGISTERED(Ipv4PacketInfoTag);

Ipv4PacketInfoTag::Ipv4PacketInfoTag()
    : m_addr(Ipv4Address()),
      m_ifindex(0),
      m_ttl(0)
{
    NS_LOG_FUNCTION(this);
}

void
Ipv4PacketInfoTag::SetAddress(Ipv4Address addr)
{
    NS_LOG_FUNCTION(this << addr);
    m_addr = addr;
}

Ipv4Address
Ipv4PacketInfoTag::GetAddress() const
{
    NS_LOG_FUNCTION(this);
    return m_addr;
}

void
Ipv4PacketInfoTag::SetRecvIf(uint32_t ifindex)
{
    NS_LOG_FUNCTION(this << ifindex);
    m_ifindex = ifindex;
}

uint32_t
Ipv4PacketInfoTag::GetRecvIf() const
{
    NS_LOG_FUNCTION(this);
    return m_ifindex;
}

void
Ipv4PacketInfoTag::SetTtl(uint8_t ttl)
{
    NS_LOG_FUNCTION(this << static_cast<uint32_t>(ttl));
    m_ttl = ttl;
}

uint8_t
Ipv4PacketInfoTag::GetTtl() const
{
    NS_LOG_FUNCTION(this);
    return m_ttl;
}

TypeId
Ipv4PacketInfoTag::GetTypeId()
{
    static TypeId tid = TypeId("ns3::Ipv4PacketInfoTag")
                            .SetParent<Tag>()
                            .SetGroupName("Internet")
                            .AddConstructor<Ipv4PacketInfoTag>();
    return tid;
}

TypeId
Ipv4PacketInfoTag::GetInstanceTypeId() const
{
    NS_LOG_FUNCTION(this);
    return GetTypeId();
}

uint32_t
Ipv4PacketInfoTag::GetSerializedSize() const
{
    NS_LOG_FUNCTION(this);
    return 4 + sizeof(uint32_t) + sizeof(uint8_t);
}

void
Ipv4PacketInfoTag::Serialize(TagBuffer i) const
{
    NS_LOG_FUNCTION(this << &i);
    uint8_t buf[4];
    m_addr.Serialize(buf);
    i.Write(buf, 4);
    i.WriteU32(m_ifindex);
    i.WriteU8(m_ttl);
}

void
Ipv4PacketInfoTag::Deserialize(TagBuffer i)
{
    NS_LOG_FUNCTION(this << &i);
    uint8_t buf[4];
    i.Read(buf, 4);
    m_addr = Ipv4Address::Deserialize(buf);
    m_ifindex = i.ReadU32();
    m_ttl = i.ReadU8();
}

void
Ipv4PacketInfoTag::Print(std::ostream& os) const
{
    NS_LOG_FUNCTION(this << &os);
    os << "Ipv4 PKTINFO [DestAddr: " << m_addr;
    os << ", RecvIf:" << (uint32_t)m_ifindex;
    os << ", TTL:" << (uint32_t)m_ttl;
    os << "] ";
}
} // namespace ns3
